36 PFAFF
39 Bobbin case opener position
Requirement: The clearance between bobbin case opening finger 1 and the edge of hook
base 2 is 0.8 mm (Fig. 1).
At the left reversal point of opener 3, hook base 4 must be deflected from
positioning finger 5 by 0.3 mm (Fig.2)
After adjustment of opening finger 1 (Fig. 2) fixing collar 6 (Fig. 3) must be
moved against the opening finger and stop screw 7 set against stop pin 8.
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.1 Axial and radial adjustment of bobbin case opening finger 1 at left reversal point of bobbin
case opening shaft (screw 9).
.2 Fixing collar 6 (screw 7).
40 Bobbin case opener movement
Requirement: When the needle bar is 1.8 mm past b.d.c. (= adjustment hole “4”), bobbin
case opener 3 (Fig. 4) must be at its right reversal point.
Eccentric 10 (screws 11).
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